Study on Power Market System Architecture and Clearance Pricing Adapted to Large Scale Access of New Energy Resources

Abstract

The construction of a new type of power market system structure with new energy as the main body is the direction and goal of China’s power development, and the continuous implementation of the “dual-carbon” goal highlights its importance and urgency. The article is focused on the development stage of the new energy power market and establishes a multidimensional synergistic power market system to adapt to large-scale access to renewable energy sources. A coordinated control strategy for facilitating new energy access to the distribution network is established through the calculation of transient currents in the power grid and the uncertainty of new energy output. Based on the calculation results of the power trading offer and load-side uniform tariff, a clearing and pricing mechanism for large-scale access to new energy sources in the power market is designed based on the consideration of the constraints of energy storage. Example data verify the effectiveness of the mechanism. When the new energy output is 5GW or 10GW, the voltage fluctuation of the power system ranges from 0.5 to 1.5, and the PV new energy output remains unchanged after the fluctuation. The subject benefit obtained from the clearing pricing scenario considering storage charging and discharging rights and capacity rights can be up to 9,428.45 yuan, which is 1.67 times higher than the subject benefit considering only storage charging and discharging rights. The clearing pricing mechanism in the multidimensional synergistic power market system helps to analyze pricing strategies under the new energy access power market and improve the economic benefits of various stakeholders.